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5V 31mm RGB Auto-color-fading MCU Builted-in-LED LED Light Board
5V 31mm RGB Auto-color-fading MCU Builted-in-LED LED Light Board
5V 31mm RGB Auto-color-fading MCU Builted-in-LED LED Light Board
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5V 31mm RGB Auto-Color-Fading MCU LED Light Board
TheRTRLED 31mm RGB Auto-Color-Fading LED Light Board is a premium, compact, and highly reliable circular LED module designed specifically for creators, hobbyists, and electronic DIY enthusiasts.
Featuring a built-in MCU (Microcontroller Unit) integrated directly into the high-performance 5050 SMD chip, this board automatically cycles through a smooth, beautiful RGB color-gradient fade effect—no external controllers, drivers, or programming required!
Simply connect to a 5V power source, and watch your creations come to life with seamless, vibrant color transitions.
Key Features
- Smart Built-in MCU (Auto-Fading): Eliminates the hassle of wiring complex RGB controllers. The intelligent microcontroller is integrated inside, enabling an automatic, smooth, and relaxing multi-color gradient fading cycle out of the box.
- Normal-Bright 5050 SMD LED: Equipped with a normal 5.0mm x 5.0mm RGB LED chip that delivers high luminosity, pure color output, low heat generation, and an exceptionally long lifespan.
- Safe & Stable 5V DC Operation: Fully compatible with common 5V power sources. You can easily power it via USB cables, smartphone chargers, power banks, or AA/AAA battery boxes.
- Optimized Circuit Protection: Features a high-quality onboard
430(43-Ohm) SMD resistor that precisely regulates current to protect the LED from voltage spikes, ensuring consistent performance and preventing overheating. - DIY-Friendly & Ready to Solder: Designed with large, clearly marked Positive (+)andNegative (-) tinned soldering pads for quick, easy, and secure wire connection. The circular PCB also features integrated positioning holes for hassle-free screw mounting.
Technical Specifications
| Parameter | Specification |
|---|---|
| Diameter | 31 mm |
| Input Voltage | 5V DC |
| Light Source | 5050 SMD RGB LED * 1 |
| Control Type | Integrated MCU Automatic Color Fading (RGB Gradient) |
| Onboard Resistor | 43Ω (430SMD) |
| Soldering Marks | Positive (+) and Negative (-) / GND |
Versatile Applications
This 31mm round LED panel is the perfect universal light engine for a wide array of creative lighting applications:
- 3D Acrylic Night Lights: Perfect replacement light board for wooden or plastic LED lamp bases.
- Resin & Glass Crafts: Illuminate crystal spheres, epoxy resin art, and glass ornaments from within.
- Scale Models & Dioramas: Add dynamic, futuristic glowing effects to architectural models or sci-fi dioramas.
- Custom Gadget Modding: Great for cosmetic PC case lighting, custom desk toys, or decorative accent lights.
Installation Note
Please ensure correct polarity during soldering: connect to the Positive (+) and Negative (-) terminals accordingly. Do not connect to power sources exceeding 5V DC to prevent permanent damage to the chip.
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